Pegging-jack



UNITEDV 'ETES PA EPHRAIM EVERSON, OF HAVERHILL, MASSACHUSETTS.`

PEGrGrINGr-JACK.V

Specification of Letters Patent No. 29,257, dated July 24, 1860.

To all whom t may concern:

Be it known that I, EPHRAIM EvnRSoN, of Haverhill, in the county ofEssex and State of Massachusetts, have invented an Improved Pegging-Jackor Last-Holder; and I do hereby declare that the same is fully describedand represented in the following specification and the accompanyingdrawings, of which- Figure l is a side elevation; Fig. 2, a front endelevation; Fig. 3, a vertical and longitudinal section; Fig. et, avertical and transverse section, and Fig. 5, a rear end view of it. y

The nature of my invention or improvement consists in an arrangement oftwo quadrantal slots with the clamp screw and plates of the last carrierthe same being for the purpose of enabling the last carrier to be turnedover in a plane either' to the right or the left as circumstances mayrequire; also, in the arrangement or application of slipping and holdingteeth on both the cammed lever and heel stud lever in combination withthe application of the toe rest to the base plate so as to be adjustableor movable thereon either toward or away from the heel rest; also, in anarrangement of two studs or bearers with the said curved slots and clampscrew.

In t-he drawings, A represents the supporting frame, and B the baseplate of the machine. The said base plate is a circular annulus whichrests on a movable cap plate a, supported on the frame A. The plate B ismaintained in place on the plate a by and so as to be capable of turningon a concentricI dovetailed or overriding plate, C, which is secured tothe plate a.

The frame A has two vertical clamp plates b, ZJ, which are arranged soas to receive between them another plate D, which projects downward fromthe plate a, and is furnished with two quadrantal curved slots (l, e,arranged in it as shown in Fig. 3. A clamp screw E extends through theplate b and either of the slots and is screwed into the plate b, suchclamp screw being provided with a shoulder f, to bear against the plateZ). By screwing up the clamp screw, the two plates b and b will be drawntogether and upon the intermediate plate D the elasticity of the framebeing sufficient toallow of the requisite movements of the plates. Bothslots at their upper ends open into each other so as to permit the clampscrew to pass from one into the other. Furthermore, there is on oppositesides of the frame A two studs or bearers g, It, arranged as shown inthe drawings. Their office will be hereinafter explained.

The bed plate B carries a toe rest F and a heel stud lever G. The formerslides on a rail or projection z', and is`v provided with a clamp screwand nut as shown at c, l, for securing it in position, the whole beingso as to enable the toe rest to be adjusted with reference to the heelstud m or its distance therefrom. The said heel stud m extends upwardfrom the shorter or upright arm n of the bent lever G, and enters therear part of a last H, when the latter is applied to such heel stud andthe toe rest as shown in the drawings. The fulcrum 0 of the lever issustained by ears p, p, extending upward from the base plate B, thelonger arm Q of the lever being carried toward and alongside of the toerest and furnished on its upper surface with a rack or series ofslipping and holding teeth, each of which is formed with two inclinedfaces as shown in Fig. l.

A cammed lever K, having its fulcrum r, projecting from the toe rest isarranged over the longer arm of the lever G, as shown in the drawings,the lower edge or periphery of the cam s being also provided withslipping and holding teeth arranged upon it as shown at t. By layinghold of and raising the handle of the cammed lever so as to cause thecam to bear on and depress the longer arm of the aforementioned lever Grthe teeth of one will `slip on those of the other until the lever isestopped by the resistance of the shoe last while borne down upon thetoe rest. This having taken place, the teeth will maintain the parts inposition under any jar or percussive action of the blows of a hammer ona last or a shoe thereon. Tere there to be no adjustment of the toe restas specified, it is evident that a single tooth on the heel rest leverwould suice to operate with the toothed cam of the cammed lever, but asin consequence of the changes in place to which the cam lever isnecessarily subjected by reason of the said adjustments of the toe restrelatively to the heel stud in order to adapt the machine to a last ofany ordinary size, a series or rack of teeth becomes necessary for thelonger arm of the lever Gr.

While the reversed quadrantal slots d, e, admit of the tipping movement(either to the right or left) of the plates B and a with the parts overthem one of the two stops or bearers g, h, constitutes a rest for thesupport of the periphery of the plate a, when the plates are brought upinto a vertical position such stop coperating with its next adjacentslot and with the clamp screw in supporting the bed plate, its operativeparts and the shoe last.

I do not claim in combination with a clamping screw or device, a curvedarm or a plate having a single curved slot; nor do I claim operating theheel lever by means of a. cammed lever or its equivalent; nor do I claima ball and socket joint as commonly constructed and used.

I claiml. The arrangement of the two curved slots d, e, of the plate D,with the clamp screwand its plates the same being for the purposespecied.

2. 'Ihe arrangement of the slipping and holding teeth of the cammed andheel stud levers in connection with the toe rest so applied to the baseplate as to be adjustable with reference to the heel rest as specified.

3.V The arrangement of the two studs g, L, with the two reversedquadrantal slots, the clamp screw and its plates.

In testimony whereof, I have hereunto set my signature.

EPI-IRAIM EVERSON.

Witnesses:

WM. TAGGART, GEO. E. EvERsoN.

